All three crops listed (Cowpea, Green gram, Pigeon pea) can be used as pulse, fodder, and green manure.

Pulse These are the dried edible seeds of legumes, which are a good source of protein and dietary fiber for humans.

Fodder These are plants or plant parts used as food for livestock. All three crops are rich in nutrients and can be used as animal feed.

Green manure These are plants grown specifically to be plowed back into the soil to improve its fertility. Legumes like cowpea, green gram, and pigeon pea are nitrogen-fixing plants, meaning they can add nitrogen to the soil, which is a crucial nutrient for plant growth.